drm/amd/pm: drop dead code

Raven never goes to swsmu path. So "adev->smu.ppt_funcs" will be
always false.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Tested-by: Changfeng Zhu <Changfeng.Zhu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
1 file changed